The graph below shows the number of pets per household in a block of flats. How many pets are there in this block of flats? Ans : ___

1. Read the number of households for each category of pets from the bar graph

From the graph:

• $0$ pets: $15$ households
• $1$ pet: $22$ households
• $2$ pets: $40$ households
• $3$ pets: $30$ households
• $4$ pets: $11$ households

2. Calculate the total number of pets

Total pets = $(0 \times 15) + (1 \times 22) + (2 \times 40) + (3 \times 30) + (4 \times 11)$
$= 0 + 22 + 80 + 90 + 44$
$= 236$